/Engine/Plugins/Experimental/SlateScreenReader/Source/SlateScreenReader/Public/SlateScreenReaderEngineSubsystem.h
Immediately stops speaking any currently spoken announcement for a particular screen reader user. Does nothing if there is no announcement currently being spoken for the user or if the user Id is not registered with the screen reader.
FScreenReader::Handled() if the request to stop speaking is successfully processed. ElseFScreenReaderReply::Unhandled()is returned.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="SlateScreenReader") [FScreenReaderReply](API\Plugins\ScreenReader\GenericPlatform\FScreenReaderReply) StopSpeaking ( UPARAM(DisplayName="Screen Reader User Id") int32 InUserId )